:root{
  --bg:#f1f7f5;
  --card:#ffffff;
  --primary:#0f766e;
  --primary-light:#14b8a6;
  --dark:#042f2e;
  --muted:#64748b;
  --accent:#065f46;
  --shadow:0 10px 35px rgba(0,0,0,.08);
}

*{box-sizing:border-box}

body{
  margin:0;
  font-family: Inter, system-ui, Arial;
  background:linear-gradient(180deg, #e6fff9, var(--bg));
}

/* ===== NAVBAR ===== */
.nav{
  position:sticky;
  top:0;
  z-index:1000;
  background:white;
  border-bottom:1px solid rgba(0,0,0,.05);
}

.nav-inner{
  max-width:1180px;
  margin:auto;
  padding:12px 14px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
}

.logo-box{
  display:flex;
  align-items:center;
  gap:10px;
}

.logo-img{
  width:42px;
  height:42px;
  border-radius:25px;
  object-fit:cover;
  border:1px solid #ddd;
}

.logo-text{
  font-size:20px;
  font-weight:800;
  color:var(--primary);
}

.nav-links{
  display:flex;
  gap:16px;
}

.nav-links a{
  font-weight:600;
  text-decoration:none;
  color:var(--dark);
  font-size:15px;
}

/* BUTTON */
.btn-primary{
  background:linear-gradient(90deg,var(--primary),var(--primary-light));
  color:white;
  border:none;
  padding:10px 14px;
  border-radius:12px;
  font-weight:700;
  cursor:pointer;
  text-decoration:none;
  display:inline-block;
  box-shadow:0 6px 20px rgba(20,184,166,.35);
}

/* HERO */
.hero{
  max-width:1100px;
  margin:24px auto 0;
  background:linear-gradient(135deg, var(--primary), var(--primary-light));
  color:white;
  padding:28px 20px;
  border-radius:18px;
  text-align:center;
}

/* CONTAINER */
.container{
  max-width:1100px;
  margin:28px auto 60px;
  padding:0 16px;
}

/* GRID */
.mentor-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
  gap:24px;
}

/* CARD */
.mentor-card{
  background:white;
  border-radius:18px;
  padding:20px;
  box-shadow:var(--shadow);
  text-align:center;
  border:1px solid rgba(15,118,110,.08);
  transition:transform .25s ease, box-shadow .25s ease;
}

.mentor-card:hover{
  transform:translateY(-6px);
  box-shadow:0 18px 45px rgba(0,0,0,.12);
}

/* IMAGE + WHATSAPP BUBBLE */
.mentor-img-wrap{
  position:relative;
  width:100px;
  margin:0 auto 8px;
}

.mentor-img{
  width:100px;
  height:100px;
  border-radius:50%;
  object-fit:cover;
  border:3px solid var(--primary-light);
}

.wa-bubble{
  position:absolute;
  bottom:-2px;
  right:-2px;
  width:34px;
  height:34px;
  border-radius:50%;
  background:#25d366;
  display:flex;
  align-items:center;
  justify-content:center;
  color:white;
  font-size:18px;
  text-decoration:none;
  box-shadow:0 6px 18px rgba(37,211,102,.45);
  transition:transform .2s ease, box-shadow .2s ease;
}

.wa-bubble:hover{
  transform:scale(1.12);
  box-shadow:0 10px 26px rgba(37,211,102,.55);
}

.mentor-card h3{
  margin:10px 0 4px;
  color:var(--dark);
}

.mentor-card p{
  color:var(--muted);
  font-size:14px;
}

/* TAGS */
.tag{
  display:inline-block;
  background:#e6fffa;
  color:var(--primary);
  padding:4px 10px;
  border-radius:999px;
  font-size:12px;
  margin:6px 2px;
  border:1px solid rgba(15,118,110,.15);
}

/* FOOTER NOTE */
.alt-link{
  text-align:center;
  margin-top:24px;
  color:var(--muted);
}

.alt-link a{
  color:var(--primary);
  font-weight:600;
  text-decoration:none;
}

/* MOBILE */
@media(max-width:768px){
  .nav-inner{
    justify-content:center;
    text-align:center;
    gap:10px;
  }
  .nav-links{justify-content:center;}
}